"The Utopia More Distant Than Dreams"?

Sounds a heck of a lot like a certain EX ranked Noble Phantasm made by the spirits of the planet which can surpase the gods, and blocks a world-ending, timespace-tearing Phantasm without pause: "The Ever Distant Utopia" (even moreso if you remember the whole "dream" theme Avalon has going).

Goddamnit, Saber. Stop leaving your scabbard lying about the place.